Drive-mechanism for motor-cycles.



B. G. ANDERSON.

DRIVE MEGHANISM FOR MOTOR CYCLES.

APPLICATION FILED JAT. 1 8. 1910.

Patented Mar. 7, 1911.

RN Il* plate 10, by which the oscillation of said ring in one directionor the other will cause the highest surfaces 25 of the inner faces ofsaid cams to be projected inwardly or outwardly in a radial directiontoward or from the axle 3. When the cams are swung inwardly,corresponding motion will be imparted to the rods l5 to retract the dogsor plunger 16, by which the loose section 5 of the pulley will bereleased from the fixed section 4 thereof, allowing said section 5 toturn with the drive belt independent of the section 4, whereby thedriving motion of the wheel l will be arrested without stopping themotor. I'Vhen the cams are swung outwardly, the springs return the dogsor plungers to normal locking position, thus fixing the two pulleysections together for positively transmitting driving motion from thebelt to the wheel l. A controlling rod 26 is pivotally connected withthe ring 13 and leads to a convenient point within reach of the rider bywhom said ring may be shifted to adjust the cams inwardly and outwardly.

From the foregoing description, it will be seen that the pulley section4 is xed to the rim 7 of the wheel 1 by the brackets 6, while the pulleysection 5 is free to revolve within the section 4 unless locked theretoby the plunger dog whereby the motorcycle may be stopped or permitted tocoast without the necessity of stopping the motor, and that upon theprojection of the locking dogs a positive driving action from the motorwill be secured. As is apparent, the casing 8 is fixed to the pulleysection 4 by the rods l5, while the ring 13 is permitted to have freeindependent motion for controlling the cams. Upon removing the fasteningl2 the plate l0 may be detached for cleaning or repairs of the inclosedparts of the clutch mechanism. In the present instance I have shown thecasing and parts applied when an armless form of coaster brake is used.Suitable modifications may be made to accommodate the arm of a Corbin orother type of armed coaster brake, such slight modifications as arenecessary fallingwithin the spirit and scope of the invention.

If desired, anti-friction rollers 27 may be interposed between thesections 4 and 5 of the driving element to allow the section 5 to havefree movement. Also, if desired, the driving element may be in the formof a sprocket gear composed of fixed and revoluble sections, for usewhere a chain drive instead of a belt drive is employed.

I claim l. In a drive gearing, a rotary driving element embodying afixed section and a loose section revoluble on said fixed section, asupport, slidable clutch devices carried by the support and fixedsection of the driving element to engage and lock said loose section ofthe driving element to said fixed section, springs associated with saidclutch devices for normally projecting the same, cams on the supportmovable to engage and effect the retraction of said clutch devices, anoscillatory member for adjusting said cams, and means for oscillatingsaid member.

2. In a drive gearing, a rotary driving element embodying a fixedsection and a loose section revoluble on said fixed section, a support,slidable clutch devices carried by the support and fixed section of thedriving element to engage and loclr said loose section of the drivingelement to said fixed section, springs associated with said clutchdevices for normally projecting the same, cams pivotally mounted on thesupport and provided with slots, an oscillatory member havingprojections engaging said slots to adjust the cams for retracting theclutch devices, and means for operating the oscillatory member.

In testimony whereof I affix my signature in presence of two witnesses.

BERNARD Gr. ANDERSON.

litnesses J. R. HoRsLEY, C. IV. SMITH..

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

